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You searched for: subject:"NASA PROGRAMS"
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[texts]THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION'S ROLE AS IT AFFECTS INSTRUMENTATION DEVELOPMENT - Dryden, H. L
No Abstract Available
Keywords: NASA PROGRAMS
Downloads: 94
[texts]SATELLITE SITUATION REPORT, VOLUME I, NO. 2 - Carpenter, H. E., Jr
No Abstract Available
Keywords: NASA PROGRAMS
Downloads: 168
[texts]Research in molecular physics semi-annual status report, jun. 1 - nov. 30, 1963 - Matsen, F. A.
No Abstract Available
Keywords: NASA PROGRAMS
Downloads: 70
[texts]Space cell test program monthly progress report, period ending 28 feb. 1967 - NON
No Abstract Available
Keywords: NASA PROGRAMS
Downloads: 121
[texts]Nasa-nsta youth science congresses progress report, oct. 1964 - jan. 1965 - NON
No Abstract Available
Keywords: CONFERENCES; NASA PROGRAMS; YOUTH
Downloads: 14
[texts]NASA AND ACTIVITIES IN SPACE FOR PEACEFUL PURPOSES - Bohn, L. C
No Abstract Available
Keywords: NASA PROGRAMS; UNITED STATES
Downloads: 53
[texts]Effects of research and development expenditures upon local and regional economies progress report - NON
No Abstract Available
Keywords: ECONOMY; NASA PROGRAMS
Downloads: 53
[texts]Naca - industry conference on personal aircraft research - NON
No Abstract Available
Keywords: CONFERENCES; INDUSTRIES; NASA PROGRAMS
Downloads: 217
[texts]On-Board Chemical Propulsion Technology - Reed, Brian D
On-board propulsion functions include orbit insertion, orbit maintenance, constellation maintenance, precision positioning, in-space maneuvering, de-orbiting, vehicle reaction control, planetary retro, and planetary descent/ascent. This paper discusses on-board chemical propulsion technology, including bipropellants, monopropellants, and micropropulsion. Bipropellant propulsion has focused on maximizing the performance of Earth storable propellants by using high-temperature, oxidation-resistant ...
Keywords: ASTRONAUTS; EDUCATION; NASA PROGRAMS
Downloads: 163
[texts]Third semiannual report to the congress, october 1, 1959 - march 31, 1960 - NON
No Abstract Available
Keywords: LAUNCH VEHICLES; NASA PROGRAMS
Downloads: 277
[texts]Preliminary analysis of hydrogen-rich hypersonic ramjet operation - Breitwieser, R.
No Abstract Available
Keywords: HISTORIES; NASA PROGRAMS; MANAGEMENT PLANNING
Downloads: 156
[texts]NASA SPACE UTILIZATION AT AMR - NON
No Abstract Available
Keywords: CAPE KENNEDY LAUNCH COMPLEX; NASA PROGRAMS
Downloads: 74
[texts]Apollo and the Unmanned Program - Boyle, W. S.
The conclusions reached from the arguments in the main body of the text are summarized here for convenience of the reader. The current situation of the support for Apollo from the unmanned program can be stated as follows: 1. Less than a satisfactory minimum of design input information will be available. 2. Little design modification data will be obtained in time. 3. Definitive design confirmation data, coupled with a very conservative Apollo design, is a requirement...
Keywords: ALLOCATIONS; NASA PROGRAMS; UNIVERSITY PROGRAM; BUDGETING
Downloads: 119
[texts]Comparison of Modal Analysis Methods Applied to a Vibro-Acoustic Test Article - Pritchard, Jocelyn
Modal testing of a vibro-acoustic test article referred to as the Aluminum Testbed Cylinder (ATC) has provided frequency response data for the development of validated numerical models of complex structures for interior noise prediction and control. The ATC is an all aluminum, ring and stringer stiffened cylinder, 12 feet in length and 4 feet in diameter. The cylinder was designed to represent typical aircraft construction...
Keywords: MULTIDISCIPLINARY RESEARCH; MODELS; IDENTIFYING; NASA PROGRAMS
Downloads: 204
[texts]Poly(arylene ether)s containing pendent ethynyl groups - NON
Poly(arylene ether)s containing pendent ethynyl and substituted ethynyl groups and poly(arylene ether) copolymers containing pendent ethynyl and substituted ethynyl groups are readily prepared from bisphenols containing ethynyl and substituted ethynyl groups. The resulting polymers are cured up to 350 C to provide crosslinked poly(arylene ether)s with good solvent resistance, high strength and modulus.
Keywords: INTELLECTUAL PROPERTY; NASA PROGRAMS; SECURITY; TECHNOLOGY TRANSFER
Downloads: 100
[texts]Lessons Learned in the Livingstone 2 on Earth Observing One Flight Experiment - Hayden, Sandra C.
The Livingstone 2 (L2) model-based diagnosis software is a reusable diagnostic tool for monitoring complex systems. In 2004, L2 was integrated with the JPL Autonomous Sciencecraft Experiment (ASE) and deployed on-board Goddard's Earth Observing One (EO-1) remote sensing satellite, to monitor and diagnose the EO-1 space science instruments and imaging sequence. This paper reports on lessons learned from this flight experiment...
Keywords: ASTROPHYSICS; DARK ENERGY; UNIVERSE; NASA PROGRAMS
Downloads: 167
[texts]International Space Station Increment-6/8 Microgravity Environment Summary Report November 2002 to April 2004 - Jules, Kenol
This summary report presents the analysis results of some of the processed acceleration data measured aboard the International Space Station during the period of November 2002 to April 2004. Two accelerometer systems were used to measure the acceleration levels for the activities that took place during Increment-6/8. However, not all of the activities during that period were analyzed in order to keep the size of the report manageable...
Keywords: RESEARCH; EDUCATION; NASA PROGRAMS; STUDENTS; SCHEDULES; SUMMER
Downloads: 194
[texts]Hollow cathode plasma coupling study, 1986 - Wilbur, Paul J
The electron collection and emission characteristics of a simple hollow cathode contactor, an extended anode hollow cathode contactor supplied by JSC, and a ring cusp magnetic field contactor are presented and the effects of discharge power and argon or xenon expellant flowrate on these characteristics are examined. All of the contactors are shown to exhibit good electron emission performance over a wide range of discharge power and expellant type and flowrate...
Keywords: DOCUMENTATION; INDEXES (DOCUMENTATION); TERMINOLOGY; NASA PROGRAMS; NOMENCLATURES
Downloads: 118
[texts]Microbiological Characterization and Concerns of the International Space Station Internal Active Thermal Control System - Roman, Monsi C.
Since January 1999, the chemical the International Space Station Thermal Control System (IATCS) and microbial state of (ISS) Internal Active fluid has been monitored by analysis of samples returned to Earth. Key chemical parameters have changed over time, including a drop in pH from the specified 9.5 /- 0.5 ta = 58.4, an increase in the level of total inorganic carbon (TIC), total organic carbon (TOC) and dissolved nickel (Ni) in the fluid, and a decrease in the phosphate (PO,) level...
Keywords: INFORMATION TRANSFER; NASA PROGRAMS; EDUCATION; BIBLIOGRAPHIES; CONFERENCES
Downloads: 117
[texts]Volume changes and Poisson's ratio of polyurethane propellants under tensile deformations - Stedry, P. J.
No Abstract Available
Keywords: RESEARCH PROJECTS; SPACE EXPLORATION; NASA PROGRAMS; SUMMARIES
Downloads: 333
[texts]Low Earth Orbital Atomic Oxygen Interactions With Materials - Banks, Bruce A.
Atomic oxygen is formed in the low Earth orbital environment (LEO) by photo dissociation of diatomic oxygen by short wavelength () 243 nm) solar radiation which has sufficient energy to break the 5.12 eV O2 diatomic bond in an environment where the mean free path is sufficiently long ( 108 meters) that the probability of reassociation or the formation of ozone (O3) is small. As a consequence, between the altitudes of 180 and 650 km, atomic oxygen is the most abundant species...
Keywords: DESIGN ANALYSIS; REVIEWING; NASA PROGRAMS; PROJECT MANAGEMENT
Downloads: 349
[texts]Micro-Scale Regenerative Heat Exchanger - Moran, Matthew E.
A micro-scale regenerative heat exchanger has been designed, optimized and fabricated for use in a micro-Stirling device. Novel design and fabrication techniques enabled the minimization of axial heat conduction losses and pressure drop, while maximizing thermal regenerative performance. The fabricated prototype is comprised of ten separate assembled layers of alternating metal-dielectric composite...
Keywords: MANAGEMENT ANALYSIS; MICROELECTRONICS; RISK; NASA PROGRAMS; RELIABILITY
Downloads: 277
[texts]NASA/State Education Cooperation - NON
NASA is cooperating with state departments of education in a number of special education programs. An example is Maryland Summer Centers for Gifted and Talented Students sponsored by the Maryland State Department of Education. Some 2,600 students participated in the 1990 program. One of the 12 centers is the Center for Space Science and Technology at Goddard Space Flight Center, which provides instruction to students of the 9-12 grade level...
Keywords: EDUCATION; STUDENTS; UNIVERSITIES; RESEARCH AND DEVELOPMENT; NASA PROGRAMS; LOUISIANA
Downloads: 16
[texts]Change in the elastic parameters and strength of rocks under pressure - Stakhovskaya, Z. I
Porosity effects on rock strength and elastic modulus when subjected to high pressure
Keywords: INFORMATION SYSTEMS; TECHNOLOGY TRANSFER; INFORMATION MANAGEMENT; NASA PROGRAMS; TECHNOLOGY UTILIZATION
Downloads: 69
[texts]Ideal black hole fluid - Smalley, Larry L
The concept of a primordial black hole fluid is introduced and its consequence for supercluster-sized (i.e., large scale voids) and the missing mass question are discussed.
Keywords: NASA PROGRAMS; PROPELLERS; TURBOPROP ENGINES; AEROACOUSTICS; AERODYNAMICS; RESEARCH MANAGEMENT
Downloads: 71
[texts]Wind-tunnel tests of the static and dynamic stability characteristics of four ballistic reentry bodies - Reese, D. E., Jr.
No Abstract Available
Keywords: NASA PROGRAMS; SPACE EXPLORATION; RESEARCH FACILITIES; ROCKET FLIGHT
Downloads: 119
[texts]Transonic wind tunnel investigation of an inlet model of a supersonic fighter bomber airplane - Brooks, J. D.
No Abstract Available
Keywords: INFORMATION DISSEMINATION; NASA PROGRAMS; TECHNOLOGY UTILIZATION; DOCUMENTATION; SYSTEMS ANALYSIS
Downloads: 122
[texts]A hybrid connectionist/AI architecture for reflexive, reflective, and exploratory systems - Myers, Michael H
No Abstract Available
Keywords: NASA PROGRAMS; PROJECT MANAGEMENT; DATA BASES; FEDERAL BUDGETS
Downloads: 82
[texts]Multilayer Film Assembly of Carbon Nanotubes - Cassell, Alan M.
An approach to assemble multilayers of carbon nanotubes on a substrate is presented. Chemical vapor deposition using a transition metal catalyst formulation is used to grow the nanotubes. Results show a bilayer assembly of nanotubes each with a different density of tubes.
Keywords: CONFERENCES; EDUCATION; ENGINEERS; RESEARCH AND DEVELOPMENT; NASA PROGRAMS; ABSTRACTS
Downloads: 88
[texts]Global Autocorrelation Scales of the Partial Pressure of Oceanic CO2 - Li, Zhen
A global database of approximately 1.7 million observations of the partial pressure of carbon dioxide in surface ocean waters (pCO2) collected between 1970 and 2003 is used to estimate its spatial autocorrelation structure. The patterns of the lag distance where the autocorrelation exceeds 0.8 is similar to patterns in the spatial distribution of the first baroclinic Rossby radius of deformation indicating that ocean circulation processes play a significant role in determining the spatial variab...
Keywords: AUTONOMY; PROGRAM VERIFICATION (COMPUTERS); INTELLIGENCE; PREDICTION ANALYSIS TECHNIQUES; NASA PROGRAMS
Downloads: 77
[texts]SPAN: Ocean science - Thomas, Valerie L.
The Space Physics Analysis Network (SPAN) is a multi-mission, correlative data comparison network which links space and Earth science research and data analysis computers. It provides a common working environment for sharing computer resources, sharing computer peripherals, solving proprietary problems, and providing the potential for significant time and cost savings for correlative data analysis...
Keywords: AEROSPACE MEDICINE; LIFE SCIENCES; NASA PROGRAMS; EXOBIOLOGY; SPACE LAW
Downloads: 76
[texts]Overview of NASA Projects - Rickman, Douglas L
This viewgraph presentation reviews NASA's efforts in Regolith simulants. This effort is in support of future lunar missions.
Keywords: REGOLITH; ANALOGS; LUNAR CRUST; LUNAR ROCKS; NASA PROGRAMS
Downloads: 96
[texts]Sloshing of Cryogenic Helium Driven by Lateral Impulse/Gravity Gradient-Dominated/or g-Jitter-Dominated Accelerations and Orbital Dynamics - Hung, R. J.
The coupling of slosh dynamics within a partially filled rotating dewar of superfluid helium 11 with spacecraft orbital dynamics is investigated in response to the environmental disturbances of (a) lateral impulses, (b) gravity gradients and (c) g-jitter forces. The purpose of this study is to investigate how the coupling of helium 11 fluid slosh dynamics driven by three cases of environmental force with spacecraft dynamics can affect the bubble deformations and their associated fluid and spacec...
Keywords: NASA PROGRAMS; EDUCATION; INSTRUCTORS; TARGETS; SURVEYS; ATTITUDE INDICATORS
Downloads: 108
[texts]The Development of a New Lateral-Control Arrangement - Baker, Paul S
Development work on an arrangement using ailerons and spoilers for lateral control was carried out by the Vought-Sikorsky Aircraft Division of the United Aircraft Corporation on a small commercial airplane in flight and on an airfoil in a wind tunnel. Spoiler hinge moments were reduced by aerodynamic balance. The arrangement was then built into an experimental airplane and further improvements were adopted as the result of flight and tunnel tests...
Keywords: PRODUCTIVITY; NASA PROGRAMS; CONFERENCES; COST REDUCTION; PRODUCT DEVELOPMENT
Downloads: 83
[texts]Pilot Non-Conformance to Alerting System Commands During Closely Spaced Parallel Approaches - Pritchett, Amy R.
Pilot non-conformance to alerting system commands has been noted in general and to a TCAS-like collision avoidance system in a previous experiment. This paper details two experiments studying collision avoidance during closely-spaced parallel approaches in instrument meteorological conditions (IMC), and specifically examining possible causal factors of, and design solutions to, pilot non-conformance.
Keywords: NASA PROGRAMS; INVENTIONS; TECHNOLOGY UTILIZATION; PATENTS; PATENT APPLICATIONS; ABSTRACTS; BIBLIOGRAPHIES
Downloads: 87
[texts]Biochemical assays on plasminogen activators and hormones from kidney sources - Barlow, Grant H.
Investigations were established for the purpose of analyzing the conditioned media from human embryonic kidney cell subpopulations separated in space by electrophoresis. This data is based on the experiments performed on STS-8 on the continuous flow electrophoresis system. The primary biological activity that was analyzed was plasminogen activator activity, but some assays for erythropoeitin and human granulocyte colony stimulating activity were also performed...
Keywords: AEROSPACE ENGINEERING; NASA PROGRAMS; PATENT POLICY; ABSTRACTS; INVENTIONS; TECHNOLOGY UTILIZATION
Downloads: 102
[texts]Entrance of mankind into space (15th anniversary of the first manned flight into space) - Skuridin, G. A.
The stages in the development of the idea of manned flight into space are traced along with the evolution of the profession of cosmonauts who have become spacecraft test pilots and also research scientists solving many scientific, national, and economic problems.
Keywords: APOLLO 12 FLIGHT; SPACE EXPLORATION; APOLLO FLIGHTS; NASA PROGRAMS
Downloads: 102
[texts]Space shuttle orbiter handling quality criteria applicable to terminal area, approach, and landing - Hardy, G. H
An analytical pilot-vehicle study was made to determine the performance criteria for the space shuttle vehicle. Specifications for the flying qualities of piloted aircraft were used for appropriate portions of the space shuttle mission. The handling qualities during the terminal phases of the space shuttle flight were simulated to develop the necessary criteria. Additional criteria required for conditions during the unpowered approach and landing trajectory portion of the flight are explained.
Keywords: GEODESY; NASA PROGRAMS; TRACKING STATIONS; SATELLITE OBSERVATION; TABLES (DATA)
Downloads: 116
[texts]Neural-Net Processing of Characteristic Patterns From Electronic Holograms of Vibrating Blades - Decker, Arthur J
Finite-element-model-trained artificial neural networks can be used to process efficiently the characteristic patterns or mode shapes from electronic holograms of vibrating blades. The models used for routine design may not yet be sufficiently accurate for this application. This document discusses the creation of characteristic patterns; compares model generated and experimental characteristic patterns; and discusses the neural networks that transform the characteristic patterns into strain or d...
Keywords: CONFERENCES; EDUCATION; MINORITIES; AMERICAN INDIANS; NASA PROGRAMS; INSTRUCTORS; STUDENTS
Downloads: 75
[texts]Neutronics analysis of an open-cycle high-impulse gas core reactor concept - Whitmarsh, C. L., Jr
A procedure was developed to calculate the critical fuel mass, including the effects of propellant pressure, for coaxial-flow gas-core reactors operating at 196,600 newtons thrust and 4400 seconds specific impulse. Data were generated for a range of cavity diameter, reflector-moderator thickness, and quantity of structural material. Also presented are such core characteristics as upper limits on cavity pressure, spectral hardening in very-high-temperature hydrogen, and reactivity coefficients.
Keywords: COMPUTER PROGRAMMING; NASA PROGRAMS; STRUCTURAL ANALYSIS; COST ANALYSIS; TECHNOLOGY TRANSFER
Downloads: 108
[texts]Evaluation of an Impedance Model for Perforates Including the Effect of Bias Flow - Betts, J. F.
A new bias flow impedance model is developed for perforated plates from basic principles using as little empiricisms as possible. A quality experimental database was used to determine the predictive validity of the model. Results show that the model performs better for higher (15%) rather than lower (5%) percent open area (POA) samples. Based on the least squares ratio of numerical vs. experimental results, model predictions were on average within 20% and 30% for the higher and lower (POA), resp...
Keywords: EDUCATION; LOW COST; NASA PROGRAMS; MESSAGES; TARGETS; RELATIONSHIPS; SPACE MISSIONS
Downloads: 152
[texts]Experiments with Ultracold Quantum-degenerate Fermionic Lithium Atoms - Ketterle, Wolfgan
Experimental methods of laser and evaporative cooling, used in the production of atomic Bose-Einstein condensates have recently been extended to realize quantum degeneracy in trapped Fermi gases. Fermi gases are a new rich system to explore the implications of Pauli exclusion on scattering properties of the system, and ultimately fermionic superfluidity. We have produced a new macroscopic quantum system, in which a degenerate Li-6 Fermi gas coexists with a large and stable Na-23 BEC...
Keywords: NASA PROGRAMS; EDUCATION; STUDENTS; RESEARCH PROJECTS; AEROSPACE ENGINEERING
Downloads: 113
[texts]Ultraviolet Spectra of Two Magnetic White Dwarfs and Ultraviolet Spectra of Subluminous Objects Found in the Kiso Schmidt Survey - Wegner, Gary A
Low resolution International Ultraviolet Explorer (IUE) spectroscopic observations of two magnetic white dwarfs BPM25114 and K813-14 were obtained using both the SWP and LWP cameras. The first object has an observed magnetic field of 4 x 10(7) Gauss and the second has one of 3 x 10(7) Gauss. Both objects have overall spectral energy distributions appropriate for cool DA white dwarfs with T(eff) near 10,000 K and accordingly show strong lambda lambda 1400 and 1600 absorption in their spectra...
Keywords: NASA PROGRAMS; PATENT POLICY; ABSTRACTS; INVENTIONS; SPACE COMMERCIALIZATION; TECHNOLOGY UTILIZATION
Downloads: 64
[texts]Design guide for predicting nonlinear random response (including snap-through) of buckled plates - Ng, Chung Fa
This design guide describes a method for predicting the random response of flat and curved plates which is based on theoretical analyses and experimental results. The plate curvature can be due to postbuckling, in-plane mechanical or thermal stresses. Based on a single mode formula, root mean square values of the strain response to broadband excitation are evaluated for different static buckled configurations using the equivalent linearization technique...
Keywords: AEROSPACE INDUSTRY; NASA PROGRAMS; QUALITY; HUMAN RESOURCES; MANAGEMENT; TEAMS
Downloads: 90
[texts]Method and Apparatus for Pressure Pulse Arcjet Starting - NON
The invention disclosed is directed to a method and apparatus for an arcjet starter. The invention discloses a method of moving an arc from the subsonic region of the thruster to the supersonic region by introducing a pressurized propellant into the casuty of the anode.
Keywords: RESEARCH AND DEVELOPMENT; RESEARCH PROJECTS; UNIVERSITY PROGRAM; NASA PROGRAMS; INSTRUCTORS
Downloads: 62
[texts]APU diaphragm testing. Test plan - Shelley, Richar
Auxiliary Power Unit (APU) fuel (hydrazine) tanks have had to be removed from the Columbia Shuttle (OV-102) because they have been in service for 11 years, which is the limit of their useful life. As part of an effort to determine whether the useful life of the fuel tanks can be extended, examination of the ethylene propylene rubber (EPR) diaphragm and the metal from one of the APU tanks is required...
Keywords: INDEXES (DOCUMENTATION); NASA PROGRAMS; RESEARCH PROJECTS; COMMERCE; RESEARCH; TECHNOLOGIES
Downloads: 389
[texts]On the structure of gaseous confined laminar diffusion flames: Numerical investigation - Mawid, M. A.
The structure and characteristics of gaseous confined laminar diffusion flames are investigated by numerically solving the time-dependent two-dimensional axisymmetric conservation equations. The numerical model accounts for the important chemical and physical processes involved, including axial diffusion, viscous effects, radial convection, and finite-rate chemistry. The numerical results clearly show that the flame has a finite thickness and leakage of fuel vapor into the flame zone is possible...
Keywords: INFORMATION RETRIEVAL; TERMINOLOGY; THESAURI; BATCH PROCESSING; NASA PROGRAMS; TRANSLATING
Downloads: 90
[texts]Air Force F-16 Aircraft Engine Aerosol Emissions Under Cruise Altitude Conditions - Anderson, Bruce E.
Selected results from the June 1997 Third Subsonic Assessment Near-Field Interactions Flight (SNIF-III) Experiment are documented. The primary objectives of the SNIF-III experiment were to determine the partitioning and abundance of sulfur species and to examine the formation and growth of aerosol particles in the exhaust of F-16 aircraft as a function of atmospheric and aircraft operating conditions and fuel sulfur concentration...
Keywords: ENGINEERING; COMPUTER TECHNIQUES; EDUCATION; UNIVERSITIES; NASA PROGRAMS; STUDENTS; LEARNING
Downloads: 57
[texts]CHRONOLOGY OF MAJOR NASA LAUNCHINGS HISTORICAL REPORT NO. 8 OCT. 1, 1958 - DEC. 31, 1962 - NON
Chronology of major nasa launchings
Keywords: CHRONOLOGY; HISTORIES; LAUNCHING; NASA PROGRAMS; LAUNCHING; NASA PROGRAM
Downloads: 155
[texts]Formulation of a Two-Scale Model of Turbulence - Rubinstein, Rober
A two-scale turbulence model is derived by averaging the two-point spectral evolution equation. In this model, the inertial range energy transfer and the dissipation rate can be unequal. The model is shown to reduce to a standard two-equation model in decaying turbulence.
Keywords: EDUCATION; INSTRUCTORS; SUMMER; NASA PROGRAMS; READING; SCHOOLS; LEADERSHIP
Downloads: 96
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